Definition of “gum” - English Dictionary

(Definition of “gum” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“gum” in American English

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gumnoun

us /ɡʌm/

gum noun (MOUTH)

[ C usually pl ] either of the two areas of firm, pink flesh inside the mouth that cover the bones to which the teeth are attached

gum noun (STICKY SUBSTANCE)

[ U ] a sticky substance obtained from the stems of some trees and plants that is used in industry and for sticking things together

[ U ] Gum is also chewing gum:

Most teachers dont allow their students to chew gum in class.
gum
verb us /ɡʌm/ -mm-

Nearly everything the old silverback eats gets boiled, steamed or soaked so he can gum it down.

(Definition of “gum” from the Cambridge Academic Content Dictionary © Cambridge University Press)